<p>The oxygen fluxes between the atmosphere and ocean were quantified using Argo profiling floats equipped with a RINKO oxygen sensor in the western North Pacific (24°–46°N, 127°–166°E) from 2021 to 2023. Oxygen was significantly undersaturated in winter, particularly in the subtropical mode water formation region, due to the increase in oxygen solubility with cooling and the entrainment of deep water into the surface mixed layer. On the other hand, oxygen was supersaturated during almost all seasons except in winter in all latitudinal ranges. This is due to primary production and decrease in saturation levels caused by the increase in water temperature in spring and summer. Additionally, during autumn when water temperature drops, the entrainment of subsurface oxygen maxima into the surface mixed layer further contributed to surface oxygen supersaturation and oceanic oxygen emission. Surface apparent oxygen utilization exhibited significant short-term fluctuations (&gt; 10 μmol kg⁻¹) on timescales of several days especially in winter and spring. Similar fluctuations in the fluxes were estimated primarily in winter, corresponding to higher wind speeds, and to a lesser extent in spring, characterized by weaker winds. While oxygen tended to be absorbed at higher latitudes and released at lower latitudes, there was significant variation in fluxes within the same latitudinal range. Annual fluxes were strongly influenced by winter sea surface conditions characterized by high wind speeds. Moreover, the varying wind speeds during winter exerted a notable influence on the interannual variability of the oxygen fluxes.</p>